Pabteninq device



A. F. F. GILSON.

FASTENING DEVICE.

APPLICATION FILED 050.4, 1918.

Patented May 24,1921.

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UNITED STATES PATENT-OFFICE.

ALBERT F. I. GILSON, F CLUSTER, NEW JERSEY, ASSIGNOB T0 WESTERN" ELECTRIC COMPANY, INCORPORATED, 0]! NEW YORK, N. Y., .A

CORPORATION OF NEW YORK- FASTENING DEVICE.

Patented May 24,1921.

Application filed December 4, 1918. Serial No. 265,246.

' To all whom it may concern:

Be it known that I, ALBERT F. F. GILSON, a citizen of the United States, residing'at Closter, in the county of Bergen, State of New Jersey, have invented certain new and useful Improvements in Fastening Devices, of which the following is a full, clear, concise, and exact description.

This invention relates in general to fastening devices and more particularly to a two-part fastener especially suitable for use under conditions where ease of adjustment is of prime importance.

The object of the invention is to provide an adjustable fastening device that may be quickly and accurately manipulated and one that will remain in agiven position even though subjected to severe conditions.

To accomplish this result and in accord; ance with a feature of this invention there is provided a two-part fastener comprising a strap member equipped with transverse ring to the accompanying drawing in which j corrugations and a hook member having a tongue portion adapted to -'fit between the corrugations of the strap and hold the two members together.

This and other features of the invention may be more clearly understood by refer- Figure 1 is a view showmg the strap memher and hook member in engagement; Fig. 2 is a sectional view taken along the line 1-1 of Fig. 1 and looking in the direction of the small arrows; and Fig. 3 is a side view of the arrangement shown in Fig. 1, the strap member in this case being shown in section.

Referring to the drawin there is shown a strap member 5 provide with a series of transverse corrugations 6-6. This strap member is preferably of rubber or similar material in which case the corrugations are.

molded integral therewith but when desirable a leather strap having the corrugations stitched in place ma be used. Cooperating with the strap inem er 5 is a hook member comprising a plate 70f fiber or similar material to which a metal plate 8 is secured by means of the rivets 9--9. Also secured to the metal plate 8 by means of the rivets 10-10 are the spring members 11 and 12 which have their middle portion off-set from plate 8 a distance approximately equal to the thickness of strap 5. These springs are of the same form for the greater part of 8 of the hook member.

their length and act as a double-leaf spring to permit ease of manipulation. The free I end of spring 12 is bent back at an angle of 18 0 degrees as shown in the drawing. It Wlll of course be obvious that a single spring could be employed to perform the same function as the double-leaf spring disclosed. The width of springs 11 and 12 is made approximately equal to the distance between adjacent corrugations on strap 5.

In operation, the

tened by riveting, sewing, or other means to plate 7 is securely fasone of the members to be fastened, and one gations 6-6.

It will be noted that the fastener described is not only simple in' construction but is one that can be very easily manipu-g lated to obtain a fine adjustment. This latter feature has been found to be particularly advantageous in connection with the securing of gas masks to aviators helmets, since for this service it is often necessary to adjust the mask in position when the aviators hands are incased in. heavy gloves or benumbed with cold. For this service a hook member is secured at either side of the helmet and the mask is provided with a pair of strap members likewise secured at either side. Themask is placed in position and the strap members are given the proper tension and then slipped over the hook members between corrugations, thus securing the mask in position and with the desired adjustment.

What is claimed is 1. A fastener comprising a strap member having a plurality of resilient corrugations thereon, and a spring member adapted to cooperate therewith, said spring member hav- 7 closely between said corrugations to holdsaid members in engagement in such a manner.

as to permit their being disengagedby relative transverse movement between said members. a 3. A fastener comprising a flexible strap member having a plurality of resilient transverse corrugations thereon, and a spring member having a tongue portion adapted to fit closely between and engage the edges of adjacent corrugations.

4. A fastener comprising a flexible strap member having a plurality of resilient transverse corrugations thereon, and a hook member including a plate and a spring member offset therefrom to permit the entrance of said stra 'member, the width of the spring member eing approximately equal to the distance between adjacent corrugations of the strap member whereby said members when in locked engagement may be disengaged onl by relative transverse movement between t e members.

In witness whereof, I hereunto subscribe my name this 22nd day of November A. D.

ALBERT F. F. e nsou. 

